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N-glyoxyloyl-(S)-proline benzyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

220181-42-0

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220181-42-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 220181-42-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,0,1,8 and 1 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 220181-42:
(8*2)+(7*2)+(6*0)+(5*1)+(4*8)+(3*1)+(2*4)+(1*2)=80
80 % 10 = 0
So 220181-42-0 is a valid CAS Registry Number.

220181-42-0Downstream Products

220181-42-0Relevant academic research and scientific papers

Asymmetric Steering of Oxa Diels-Alder Reactions with Silyloxydienes Employing Proline Esters as Chiral Auxiliary Groups

Blaeser, Edwin,Kolar, Patrik,Fenske, Dieter,Goesmann, Hellmut,Waldmann, Herbert

, p. 329 - 334 (2007/10/03)

Chiral aldehydes 4a,b, obtained by the ozonolysis of the corresponding N,N'-fumaroylbis 3 react in the presence of lanthanoid chelate complexes Eu(fod)3 or Eu(hfc)3 with silyloxydienes 7 or 12 to give δ-lactones 10 or dihydro-γ-pyrones 13 with very high diastereomeric ratios (up to 99:1).The absolute configuration of the predominating diastereoisomer of compound 10b was unequivocally determined by X-ray structural analysis.Keywords: Asymmetric synthesis; Chiral auxiliaries; Cycloadditions; Lanthanides; δ-Lactones

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